1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2010 Alexander Motin <mav@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #include <sys/param.h> 30 #include <sys/systm.h> 31 #include <sys/kernel.h> 32 #include <sys/module.h> 33 #include <sys/lock.h> 34 #include <sys/mutex.h> 35 #include <sys/bio.h> 36 #include <sys/sysctl.h> 37 #include <sys/malloc.h> 38 #include <sys/bitstring.h> 39 #include <vm/uma.h> 40 #include <machine/atomic.h> 41 #include <geom/geom.h> 42 #include <sys/proc.h> 43 #include <sys/kthread.h> 44 #include <geom/raid/g_raid.h> 45 #include "g_raid_md_if.h" 46 47 static struct g_raid_softc * 48 g_raid_find_node(struct g_class *mp, const char *name) 49 { 50 struct g_raid_softc *sc; 51 struct g_geom *gp; 52 struct g_provider *pp; 53 struct g_raid_volume *vol; 54 55 /* Look for geom with specified name. */ 56 LIST_FOREACH(gp, &mp->geom, geom) { 57 sc = gp->softc; 58 if (sc == NULL) 59 continue; 60 if (sc->sc_stopping != 0) 61 continue; 62 if (strcasecmp(sc->sc_name, name) == 0) 63 return (sc); 64 } 65 66 /* Look for provider with specified name. */ 67 LIST_FOREACH(gp, &mp->geom, geom) { 68 sc = gp->softc; 69 if (sc == NULL) 70 continue; 71 if (sc->sc_stopping != 0) 72 continue; 73 LIST_FOREACH(pp, &gp->provider, provider) { 74 if (strcmp(pp->name, name) == 0) 75 return (sc); 76 if (strncmp(pp->name, "raid/", 5) == 0 && 77 strcmp(pp->name + 5, name) == 0) 78 return (sc); 79 } 80 } 81 82 /* Look for volume with specified name. */ 83 LIST_FOREACH(gp, &mp->geom, geom) { 84 sc = gp->softc; 85 if (sc == NULL) 86 continue; 87 if (sc->sc_stopping != 0) 88 continue; 89 TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) { 90 if (strcmp(vol->v_name, name) == 0) 91 return (sc); 92 } 93 } 94 return (NULL); 95 } 96 97 static void 98 g_raid_ctl_label(struct gctl_req *req, struct g_class *mp) 99 { 100 struct g_geom *geom; 101 struct g_raid_softc *sc; 102 const char *format; 103 int *nargs; 104 int crstatus, ctlstatus; 105 char buf[64]; 106 107 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 108 if (nargs == NULL) { 109 gctl_error(req, "No '%s' argument.", "nargs"); 110 return; 111 } 112 if (*nargs < 4) { 113 gctl_error(req, "Invalid number of arguments."); 114 return; 115 } 116 format = gctl_get_asciiparam(req, "arg0"); 117 if (format == NULL) { 118 gctl_error(req, "No format received."); 119 return; 120 } 121 crstatus = g_raid_create_node_format(format, req, &geom); 122 if (crstatus == G_RAID_MD_TASTE_FAIL) { 123 gctl_error(req, "Failed to create array with format '%s'.", 124 format); 125 return; 126 } 127 sc = (struct g_raid_softc *)geom->softc; 128 g_topology_unlock(); 129 sx_xlock(&sc->sc_lock); 130 ctlstatus = G_RAID_MD_CTL(sc->sc_md, req); 131 if (ctlstatus < 0) { 132 gctl_error(req, "Command failed: %d.", ctlstatus); 133 if (crstatus == G_RAID_MD_TASTE_NEW) 134 g_raid_destroy_node(sc, 0); 135 } else { 136 if (crstatus == G_RAID_MD_TASTE_NEW) 137 snprintf(buf, sizeof(buf), "%s created\n", sc->sc_name); 138 else 139 snprintf(buf, sizeof(buf), "%s reused\n", sc->sc_name); 140 gctl_set_param_err(req, "output", buf, strlen(buf) + 1); 141 } 142 sx_xunlock(&sc->sc_lock); 143 g_topology_lock(); 144 } 145 146 static void 147 g_raid_ctl_stop(struct gctl_req *req, struct g_class *mp) 148 { 149 struct g_raid_softc *sc; 150 const char *nodename; 151 int *nargs, *force; 152 int error, how; 153 154 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 155 if (nargs == NULL) { 156 gctl_error(req, "No '%s' argument.", "nargs"); 157 return; 158 } 159 if (*nargs != 1) { 160 gctl_error(req, "Invalid number of arguments."); 161 return; 162 } 163 nodename = gctl_get_asciiparam(req, "arg0"); 164 if (nodename == NULL) { 165 gctl_error(req, "No array name received."); 166 return; 167 } 168 sc = g_raid_find_node(mp, nodename); 169 if (sc == NULL) { 170 gctl_error(req, "Array '%s' not found.", nodename); 171 return; 172 } 173 force = gctl_get_paraml(req, "force", sizeof(*force)); 174 if (force != NULL && *force) 175 how = G_RAID_DESTROY_HARD; 176 else 177 how = G_RAID_DESTROY_SOFT; 178 g_topology_unlock(); 179 sx_xlock(&sc->sc_lock); 180 error = g_raid_destroy(sc, how); 181 if (error != 0) 182 gctl_error(req, "Array is busy."); 183 g_topology_lock(); 184 } 185 186 static void 187 g_raid_ctl_other(struct gctl_req *req, struct g_class *mp) 188 { 189 struct g_raid_softc *sc; 190 const char *nodename; 191 int *nargs; 192 int ctlstatus; 193 194 nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs)); 195 if (nargs == NULL) { 196 gctl_error(req, "No '%s' argument.", "nargs"); 197 return; 198 } 199 if (*nargs < 1) { 200 gctl_error(req, "Invalid number of arguments."); 201 return; 202 } 203 nodename = gctl_get_asciiparam(req, "arg0"); 204 if (nodename == NULL) { 205 gctl_error(req, "No array name received."); 206 return; 207 } 208 sc = g_raid_find_node(mp, nodename); 209 if (sc == NULL) { 210 gctl_error(req, "Array '%s' not found.", nodename); 211 return; 212 } 213 g_topology_unlock(); 214 sx_xlock(&sc->sc_lock); 215 if (sc->sc_md != NULL) { 216 ctlstatus = G_RAID_MD_CTL(sc->sc_md, req); 217 if (ctlstatus < 0) 218 gctl_error(req, "Command failed: %d.", ctlstatus); 219 } 220 sx_xunlock(&sc->sc_lock); 221 g_topology_lock(); 222 } 223 224 void 225 g_raid_ctl(struct gctl_req *req, struct g_class *mp, const char *verb) 226 { 227 uint32_t *version; 228 229 g_topology_assert(); 230 231 version = gctl_get_paraml(req, "version", sizeof(*version)); 232 if (version == NULL) { 233 gctl_error(req, "No '%s' argument.", "version"); 234 return; 235 } 236 if (*version != G_RAID_VERSION) { 237 gctl_error(req, "Userland and kernel parts are out of sync."); 238 return; 239 } 240 241 if (strcmp(verb, "label") == 0) 242 g_raid_ctl_label(req, mp); 243 else if (strcmp(verb, "stop") == 0) 244 g_raid_ctl_stop(req, mp); 245 else 246 g_raid_ctl_other(req, mp); 247 } 248